Because as a healer I'm just doing 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 1

That's not fun. Until healers get more entertaining DPS abilities...best to just move it since Tanking is terribly easy to do. If you use your defensives...there is no point not to wall to wall.